1 files changed, 18 insertions, 1 deletions
diff --git a/libvo/bitmap_packer.h b/libvo/bitmap_packer.h
index c7c377cbd0..b86c3ec4f9 100644
--- a/libvo/bitmap_packer.h
+++ b/libvo/bitmap_packer.h
@@ -26,6 +26,13 @@ struct bitmap_packer {
 struct ass_image;
 struct sub_bitmaps;
 
+// Clear all internal state. Leave the following fields: w_max, h_max
+void packer_reset(struct bitmap_packer *packer);
+
+// Get the bounding box used for bitmap data (including padding).
+// The bounding box doesn't exceed (0,0)-(packer->w,packer->h).
+void packer_get_bb(struct bitmap_packer *packer, struct pos out_bb[2]);
+
 /* Reallocate packer->in for at least to desired number of items.
  * Also sets packer->count to the same value.
  */
@@ -36,6 +43,7 @@ void packer_set_size(struct bitmap_packer *packer, int size);
  * Write input sizes in packer->in.
  * Resulting packing will be written in packer->result.
  * w and h will be increased if necessary for successful packing.
+ * There is a strong guarantee that w and h will be powers of 2 (or set to 0).
  * Return value is -1 if packing failed because w and h were set to max
  * values but that wasn't enough, 1 if w or h was increased, and 0 otherwise.
  */
@@ -46,6 +54,15 @@ int packer_pack(struct bitmap_packer *packer);
  * given image list.
  */
 int packer_pack_from_subbitmaps(struct bitmap_packer *packer,
-                                struct sub_bitmaps *b, int padding_pixels);
+                                struct sub_bitmaps *b);
+
+// Copy the (already packed) sub-bitmaps from b to the image in data.
+// data must point to an image that is at least (packer->w, packer->h) big.
+// The image has the given stride (bytes between (x, y) to (x, y + 1)), and the
+// pixel format used by both the sub-bitmaps and the image uses pixel_stride
+// bytes per pixel (bytes between (x, y) to (x + 1, y)).
+// If packer->padding is set, the padding borders are cleared with 0.
+void packer_copy_subbitmaps(struct bitmap_packer *packer, struct sub_bitmaps *b,
+                            void *data, int pixel_stride, int stride);
 
 #endif